Atmospheric Rivers from a Compound Event Perspective

Guest blog by Alexandre Ramos, Instituto Dom Luiz, Portugal An Atmospheric River (AR) is a long, narrow, and transient corridor of strong horizontal water vapour transport that is typically associated with a low-level jet stream ahead of the cold front of an extratropical cyclone. The water vapour in ARs is supplied by tropical and/or extratropical moisture … Continue reading Atmospheric Rivers from a Compound Event Perspective

The compound event of heavy rainfall combined with snow-melt in southern Norway

Guest blog by Benjamin Poschlod Southern Norway is regularly exposed to floods triggered by heavy precipitation and snow-melt. A combination of high temperature leading to snow-melt and heavy rainfall is an example of a compound event, which leads to severe flooding when run-off due to snow-melt adds to river discharge from the rainfall. These compound … Continue reading The compound event of heavy rainfall combined with snow-melt in southern Norway

Investigating climate change impact on Rain-On-Snow events

Guest blog by Cenk Sezen Rain-on-snow events Rain-on-snow (ROS) floods, that is, the combined occurrence of snowmelt and rainfall events can cause huge economic impacts and endanger human lives due to a significant increase in the magnitude of runoff compared to only snowmelt or only rainfall events. Forecasting of ROS floods is difficult because of … Continue reading Investigating climate change impact on Rain-On-Snow events